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RegEx for Javascript to allow only alphanumeric
I need to find a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both.
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How are the points in CSS specificity calculated
Researching specificity I stumbled upon this blog - http://www.htmldog.com/guides/cssadvanced/specificity/
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What is recursion and when should I use it?
One of the topics that seems to come up regularly on mailing lists and online discussions is the merits (or lack thereof) of doing a Computer Science Degree. An argument that seems to come up time and again for the negative party is that they have been coding for some number of years and they have n...
Why do we need private subnet in VPC?
There are 4 scenarios in AWS VPC configure. But let's look at these two:
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Calling parent class __init__ with multiple inheritance, what's the right way?
Say I have a multiple inheritance scenario:
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Pandas selecting by label sometimes return Series, sometimes returns DataFrame
In Pandas, when I select a label that only has one entry in the index I get back a Series, but when I select an entry that has more then one entry I get back a data frame.
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How to assign from a function which returns more than one value?
Still trying to get into the R logic... what is the "best" way to unpack (on LHS) the results from a function returning multiple values?
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Difference between `constexpr` and `const`
What's the difference between constexpr and const ?
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How to write loop in a Makefile?
I want to execute the following commands:
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Comparison between Corona, Phonegap, Titanium
I am a web developer and I want to move my web products to iPhone. One of the products is like Google Maps: show map on the phone screen, you can drag or resize the map and view some information that we add to the map.
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